Question

我在Windows Phone 8.1 Visual Studio 2013（不是Windows Phone应用程序，只是Windows Phone应用程序）中创建了一个应用程序。我几乎完成了我的申请。但最后当我想要裁剪结果时，我无法从图像上的矩形发送正确的点。

private void btnCrop_Click(object sender, EventArgs e){
            // Get the size of the source image captured by the camera 
            double originalImageWidth = wbPanoramica.PixelWidth;
            double originalImageHeight = wbPanoramica.PixelHeight;

            // Get the size of the image when it is displayed on the phone 
            double displayedWidth = VisorPicture.ActualWidth;
            double displayedHeight = VisorPicture.ActualHeight;

            // Calculate the ratio of the original image to the displayed image 
            double widthRatio = originalImageWidth / displayedWidth;
            double heightRatio = originalImageHeight / displayedHeight;

            // Calculate the offset of the cropped image. This is the distance, in pixels, to the top left corner 
            // of the cropping rectangle, multiplied by the image size ratio. 
            int xoffset = (int)(((p1.X < p2.X) ? p1.X : p2.X) * widthRatio);
            int yoffset = (int)(((p1.Y < p2.Y) ? p1.Y : p2.X) * heightRatio);
            int X1 = (int)(p1.X * widthRatio);
            int Y1 = (int)(p1.Y * heightRatio);



            var cropped = wbPanoramica.Crop(X1, Y1, yoffset, xoffset);

            wbPanoramica = cropped;
            // Set the source of the image control to the new cropped bitmap
            VisorPicture.Source = wbPanoramica;
            rect.Visibility = Visibility.Collapsed;


            //Enable  accept and reject buttons to save or discard current cropped image.
            //Disable crop button until a new cropping region is selected.
            btnAceptar.IsEnabled = true;
            btnReject.IsEnabled = true;
            btnCortar.IsEnabled = false;

            //Instructional text
            textStatus.Text = "Continue editando la imagen, acepte, o rechace el cambio";
        }

Answer 1

我遇到了你的问题。它就像你在裁剪时没有获得精确的像素吗？我也有类似的问题。我做的是

wbPanoramica.Height=wbPanoramica.Height/2;
wbPanoramica.Width=wbPanoramica.Width/2;

传递裁剪像素时，像这样传递

var cropped = wbPanoramica.Crop(X1*2, Y1*2, yoffset, xoffset);

如果有帮助，请告诉我

Windows Phone 8.1中裁剪图像的问题

1 个答案: